What is the relationship between a motion for injunctive relief and the underlying complaint?

nexus between the claims raised in a motion for injunctive relief and the claims set forth in the underlying complaint itself." Pac. Radiation Oncology, LLC v. Queen's Med. Ctr., 810 F.3d 631, 636 (9th Cir. 2015). The relationship between the preliminary injunction and the underlying complaint must be "sufficiently strong where the preliminary injunction would grant relief of the same character as that which may be granted finally." Id. (citations omitted). "Absent that relationship or nexus, the district court lacks authority to grant the relief requested." Id.